Inhibition of silica precipitation

Details Inhibition of silica precipitation Inhibition of silica precipitation

1995-08-25

1997-09-09

Hruskoci, Peter A.

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

606412, 606415, 210743, 210747, 422 12, C02F 508

Patent

active

056652429

ABSTRACT:
A method for controlling fouling of a flashing vessel or heat-exchange surface exposed to a high-enthalpy geothermal brine tending to form silicon-containing scale. The method adds a silicon-complexing amount of fluoroborate species to the brine to form a fluid mixture that does not produce substantial amounts of the scale when the temperature of the fluid mixture is reduced. The addition does not significantly increase corrosion rates of mild steel heat-exchanger materials of construction.

REFERENCES:
patent: 4420399 (1983-12-01), Redmore
patent: 4479543 (1984-10-01), Kalfayan et al.
patent: 4500434 (1985-02-01), Jost et al.
patent: 4584104 (1986-04-01), Dubin
patent: 5073270 (1991-12-01), Gallup et al.
patent: 5190664 (1993-03-01), Gallup et al.

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